package com.lagou.coder;

import com.lagou.Serializer.Serializer;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;

/**
 * @author chenjr16@meicloud.com
 * @Description:
 * @ClassName: RpcEncoder
 * @date 2020-6-3 17:48
 */
public class RpcEncoder extends MessageToByteEncoder {

    private Class<?> clazz;

    private Serializer serializer;


    public RpcEncoder(Class<?> clazz, Serializer serializer) {

        this.clazz = clazz;

        this.serializer = serializer;

    }

    @Override
    protected void encode(ChannelHandlerContext channelHandlerContext, Object msg, ByteBuf byteBuf) throws Exception {
            byte[] bytes = serializer.serialize(msg);
            byteBuf.writeInt(bytes.length);
            byteBuf.writeBytes(bytes);
    }
}
